TC4420COA713

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TC4420COA713 is a P-channel MOSFET driver that belongs to a family of products designed specifically as High-Side Gate Drivers. It is ideal for switching peripherals, stepper motors and other applications that require isolated gate driving. This article will discuss the application fields and workings of the TC4420COA713.

Application Fields

The TC4420COA713 finds its usage in two primary applications. These are:

• Driving Motors: The TC4420COA713 can be employed in driving separately excited motors, such as unipolar stepper motors. In such applications, it can serve as the high-side and low-side driver for the motor’s coils, making it an efficient power integrator. It can also be used for driving larger motors in combination with external power MOSFETs.
• Generating Pulse Width Modulation (PWM): As a high-side driver, the TC4420COA713 can be used to generate relatively large PWM signals with a high degree of accuracy. This makes it ideal for controlling the speed, torque, direction and other attributes of a motor.

Working Principle

The TC4420COA713 is based on the high voltage, high speed P-channel MOSFET technology. The device features an integrated ground-referenced, high input impedance circuit which allows it to maintain the integrity of the high-side gate drive signal. This helps to ensure that it can consistently turn the associated P-channel MOSFET on and off with high accuracy, frequency and rise/fall times. The driver also employs internal current limiting circuitry to protect both the device and the target MOSFET from over-driving.

The TC4420COA713 offers superior ESD protection for the circuit it is driving. This protection is provided by the “clamping action” of the p-channel MOSFET which serves as a protection circuit between the driver and the motor or other device. Through this circuit, any voltage which exceeds the maximum allowable VGS of the MOSFET will be efficiently clamped, eliminating the possibility of damaging the connected device. In addition, the TC4420COA713 also boasts a very low input current leakage, making it extremely efficient.

The TC4420COA713 also offers a versatile adjustable speed control feature. This feature allows designers to choose how quickly the driver rises and falls, allowing them to better manage power efficiency and heat dissipation. Furthermore, the device features an adjustable current limit feature that helps to protect the connected device from potential over-drive.

In terms of analog interface control options, the TC4420COA713 features an independent pulse width and power enable pin, providing engineers with the flexibility to fine tune the startup sequence of the peripheral device. It also features ENABLE/DISABLE logic levels that enable power-down states, making it possible to reduce overall power consumption.

Conclusion

To sum up, the TC4420COA713 is a high-side gate driver which is designed to improve the safety and performance of motor control applications. It offers superior ESD protection and adjustable speed control, allowing users to optimize gate drive performance. Its low input current leakage and adjustable current limit features make it an ideal choice for protecting associated devices from over-driving. The device’s versatility and ease-of-use make it suitable for a wide variety of motor control applications.

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